#4-40 X 5/16" Machine Screws | Pan Head | Six Lobe Drive | Steel Black Oxide (10000/Pkg.)
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#4-40 X 5/16" Machine Screws | Pan Head | Six Lobe Drive | Steel Black Oxide (10000/Pkg.)

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#4-40 X 5/16" Machine Screws | Pan Head | Six Lobe Drive | Steel Black Oxide (10000/Pkg.)

Mutual ScrewSKU: 0405MTFBKC
Price:
$446.89per 10000( $0.04 each)
Pieces 10000
Measurement type Inch
Thread size #4-40
Diameter 4
Length 5/16
Material Steel
Grade Steel
Finish Black Oxide
Drive Six Lobe
Head style Pan
Threads per inch 40
Thread style Fully Threaded
Weight 9.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Engineered for dependable performance, the Machine Screws Six Lobe Pan Head Steel Black Ox 4-40X5/16 delivers secure fastening in electronics, machinery, and appliances. The six-lobe (Torx) drive provides excellent torque transfer and reduced cam-out, ideal for assembly lines and DIY projects alike.

Key features:

  • Drive type: Six-lobe Torx for precise engagement and high torque tolerance.
  • Head style: Pan head for a low-profile, finished look and broad bearing surface.
  • Material: Steel for strength and durability.
  • Finish: Black oxide offers corrosion resistance and a non-reflective finish.
  • Thread size: 4-40 UNC
  • Length: 5/16 inch (0.3125")

Applications include electronics enclosures, machinery assemblies, and general hardware projects where a secure, flush-fitting fastener is required. This screw pairs with standard 4-40 threaded components and nuts.

Optimize your build with these reliable machine screws and enjoy smooth installation, strong holding power, and a professional finish.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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